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Today,I encounter a very tough problem which cost me nearly 6 hours.
When I remove a file called ha_wan.conf using rm -rf ha_wan.conf command under /etc directory,Success.When I use ls -al command to see the result,The file disappear.
But when I reboot the linux system,same file named ha_wan.conf come back,located under /etc/ directory.
I tried to delete it many many times,It is the same result.
What should I do,I want to permanently remove that file.Thanks.
There's no magic. You removed the file. If you still see it after a reboot, it means one of two things:
(very likely) Some service recreates the files on boot, or periodically. You can probably use standard system tools to find out which package contained that file. (for example dpkg -S ha_wan.conf in debian-like systems)
(unlikely) You're running some interesting system which uses a temporary filesystem in /etc. If you're using a standard desktop distribution, that's improbable. But if it's some kind of router / special device, then it could happen.
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I have the following challenge under Linux:
An application is writing a config-file "samename.cfg" into certain directories
I want to have the config-file named different for each directory
I do not want any file called "samename.cfg" written to the directories
I can not change it in the application
So I would like to have the application thinking that it accesses samename.cfg but in fact it reads and writes anothername.cfg. Symlink does not help, because then there still is a file called samename.cfg in every directory.
Anybody any idea?
Regards,
Axel
Try using a hard link instead of a soft link when using ln command (just remove the -s flag).
See ln man's page for more details.
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I just coded a script in bash on Ubuntu but I don't know where I should put it...
I read I had to put it in /usr/bin in a tutorial but maybe it's better directly in /bin ?
This is the difference between both directories:
/bin
It contains commands that can be used by both the system administrator and the users, but which are necessary when other file systems are not mounted (for example, in single user mode). It can also contain commands that scripts use indirectly
/usr/bin/
This is the main directory of executable commands in the system.
Therefore, it will work on both, but you must establish what responsibility your script has.
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I come from MS-DOS background, where it is permitted to type cd.. (without the space between cd and ..) instead of cd ... The Linux terminal, however, finds cd.. objectionable.
Is there a way to make Linux terminal understand cd.. to mean cd ..?
I'm using Ubuntu.
And I am well aware that this is a rather silly problem, but I have cd.. committed to muscle memory (since early childhood, my brain has been wired that way) and I've been making that mistake at least twenty times every day, for several years now, ever since I started using Linux on a regular basis.
You could create an alias:
alias cd..="cd .."
If you add this to some file that's loaded whenever you log in (e.g., .bashrc if you're using bash), you'd get the effect of having this alias permanently available.
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I'm a green hand to linux using the vmware called Parallels on my mac and the edition I use is CentOS7.When I use the ls -al command, I found some files don't have name as follow in surprise:
I just want to know as these files are seemingly generated at a same time, what are they? how to delete them?
On *nix system every file has an atrribute called i-node. You can find with command
ls -i
when you have i=node number you can delete file by
find . -inum 782263 -exec rm -i {} \;
You could use any other commands not only rm.
more details you can find here
http://www.cyberciti.biz/tips/delete-remove-files-with-inode-number.html
As the d in drwxr-xr-x states, those are folders (or at least the filesystem thinks they are). You may use Midnight Commander to delete them. You may already have it installed on your machine, try to run mc to see if it's there.
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I'm running CentOS 6.4 in a VMWare Player virtual machine. I was trying to add two partitions to the file system. First I used fdisk to add the partitions, then mke2fs, then I mounted the partitions. Then I manually edited /etc/fstab, I added lines for the new partitions listed by blkid.
When I restarted, the OS is failing to start, it brings me to a terminal. So I tried to undo the changes I made to the /etc/fstab file, but it's saying that everything is read only, even though I am root. It won't let me remove the lines I added before to /etc/fstab.
Does anybody know how I can recover? At least how to get the stupid thing to boot again.
I think you need to remount the filesystem in rw mode:
mount -o rw,remount /
After that you can edit /etc/fstab and revert your changes, save the file and reboot.